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Suppose a sample of helium gas has a volume of 4.54L at 230.3K and 1.644 atm. Explain how many helium molecules does it contain?
Find the molarity of a Ca(OH)2 solution,given that 388 mL of it is neutralized in a titration by 117 mL of 0.0058 M HNO3.
If the temperature in the chamber is 103 °C after the charge is ignited, what is the pressure, in atmospheres, behind the cannonball when the gunpowder goes off?
glass is a notorious source of metal ion contamination. three glassbottles were crushed and sieved to collect 1-mm
A solution composed of an equal number of moles of acetone and chloroform has a vapor pressure of 250 torr at 35 degrees celsius. (a) what would be the vapor pressure of the solution if it exhibited ideal behavior
Identities of the components in a mixture may be determined by a technique called spiking. Suppose you had run a gas chromatogram on your product and had then deliberately added a drop of a known sample of 3-methylcyclohexene to a drop of your pro..
The average distance between Mars and Earth is 1.3 x 10^8 miles. How long will it take a picture transmitted from the Viking space vehicle on Mars' surface to reach Earth
Calculate the wavelength of each of the following frequencies of electromagnetic radiation. 1105 kHz (typical frequency for AM radio broadcasting)
what kind of product distribution and what does that tell you about the operating mechanism and the factors that affect product distribution?
what is the initial concentration of acetone, H+ and I2 in the reaction mixture. it took 120 seconds for I2 color to disappear from the reaction mixture, what was the rate of reaction.
determine how many grams of oxygeno2 would be used when 10.82 litres nitric oxide nog is formed at the temperature of
At 27°C, a sample of sulfur dioxide (SO2) has a volume of 30.0 mL.
In the reaction of nickel with concentrated nitric acid, the products are nickel (III) nitrate, water and nitrogen monoxide, sometimes called nitric oxide. How many grams of nickel reacted
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